Найдете периметр прямоугольника, если его площадь равна 98 см2, а одна из сторон вдовое больше другой дано: найти: решение:

1. Ann asked him not to take the books away from the reading-room. 2. Sam told me that as soon as he heard from him he would let me know. 3. Ann asked him if there would be any changes in his plans. 4. Ann wondered what had happened and what was everybody so excited about. 5. Ann asked him if the secretary would have looked through all the papers by the time the manager came. 6. Sam told me that all I had to do was to leave the message with the secretary.

дано: треугольникАВСД, площадь= 98см2, ВС>АВ в 2 раза ^- в квадрате найти : пириметр АВСДрешение: 1) пусть АВ=×, тогда ВС= 2×ו2×=982×^= 98×^=98:2×^=49×=7-АВ2)ВС=7•2= 143) пириметр= 2•(14+7)=42см